各位英语高手,请教几个问题.My sister is sleeping. COuld you ______ the radio?A. turn on B. turn off C. turn over D. turn downDo you have to buy this hat? No, I ______. It's not necessary.A. mustn't B. won't

Question

各位英语高手,请教几个问题.

1. My sister is sleeping. COuld you ______ the radio?

   A. turn on      B. turn off        C. turn over     D. turn down

2. Do you have to buy this hat? No, I ______. It's not necessary.

   A. mustn't      B. won't           C. needn't        D. don't need

3. The strap needs mending. It ______.

   A. has mended      B. has to be mended     C. has been mended      D. has been mending

4. The children are standing _______ the starting line and are ready ______ run.

   A. at; to        B. at; for           C. in; to           D. in; for

5. Sam was taking his savings to the post office _____ he lost his wallet.

   A. when       B. as                  C. while         D. just as

Answer 1

1.B
2.C
3.B needs mending 是需要被修理 B是必须被修理A.是主动语态,不对,而且时态不对C 时态不对,这句是修过了D时态、语态都不对
4.C
5.A时间状语从句的连词只能用when或while,when任何情况都可以,while前后必须都是过去进行时,这里应选When